KR100264192B1 - Apparatus for displaying a window image - Google Patents

Abstract

Provided is a window display device in which the effective display area of the window does not protrude from the screen and is displayed.

When the window displaying the window is popped out of the screen at the position designated by the coordinate input device, display correction means for correcting the display position of the window is provided so that at least the effective display area of the window is accommodated in the screen.

Description

Window display

1 is a perspective view showing the structure of one embodiment in the case where the window display device of the present invention is applied to an electronic organizer device.

FIG. 2 is a side view showing a configuration example of a screen of the electronic organizer device shown in FIG.

FIG. 3 is a side view showing an example of the configuration of a fluorescent plate of the screen shown in FIG.

FIG. 4 is a block diagram showing the principle of position detection of a tablet and display by an LCD constituting the screen of the electronic organizer shown in FIG.

FIG. 5 is a block diagram showing the electrical configuration of the main body of the electronic organizer shown in FIG.

FIG. 6 is a flowchart showing a part of the window display operation of the electronic organizer shown in FIGS.

FIG. 7 is a flowchart showing a part of window display operation of the electronic organizer shown in FIGS.

FIG. 8 is a flowchart showing the remaining part of the window display operation of the electronic organizer shown in FIGS.

FIG. 9 is a diagram showing display contents of a screen in an initial state of the electronic organizer shown in FIGS. 1 to 5. FIG.

10 is a diagram showing display contents of a screen when pen-downed to a "print type" icon.

FIG. 11 is a diagram showing display contents of a screen when a "print" icon is drawn out from an icon area to an input display area and enlarged.

Fig. 12 is a diagram showing the display contents of the screen when the display position of the window of "print type" is corrected.

Fig. 13 is a diagram showing the display contents of a screen when a pen is moved down to the lower left as it is in the area where the letters of the "letter type" of the window of the "letter type" are displayed.

FIG. 14 is a diagram showing display contents of a screen when a window of a "print type" is protruded and displayed on the screen. FIG.

FIG. 15 is a diagram showing display contents of a screen when the " tool " icon shown in FIGS. 8 to 13 is drawn out and enlarged.

FIG. 16 is an explanatory diagram showing a structure of a window; FIG.

FIG. 17 is an explanatory diagram showing a positional relationship between a window and a screen; FIG.

Fig. 18 is a diagram showing a state where a window protrudes (protrudes) to the left of the screen.

19 is a view showing a state in which a window sticks out to the right side of the screen.

20 is a diagram for explaining the meaning of α.

21 (a) and 21 (b) are diagrams for explaining the meaning of β.

22 is a diagram showing a relationship between a window and an icon in a conventional window display device.

FIG. 23 is a diagram showing a display position of a window when the pen tip is shifted in the left-right direction in the conventional window display device.

24 is a diagram for explaining the structure of a window of a conventional window display device.

25 is a diagram showing a window display device when the pen tip is shifted in the vertical direction in the conventional window display device.

* Explanation of symbols for main parts of the drawings

6: pen 8: the screen

41: CPU 51: ROM

52: Working RAM 84: Icon

84L: Windows

[Industrial use]

The present invention relates to a window display device in which a display position of a window on a screen is designated by a coordinate input device.

[Prior art]

In the window display device employed in the conventional electronic notebook device (portable computer), as shown in FIG. 22, various icons 84 are placed on the icon area (standby area) 82 of the screen 8. Display. A pen (not shown), which is a coordinate input device, presses (pens down) the required icon 84 (for example, a letter icon) on the screen 8, and inputs the pen while keeping the pen down (data writing area). Drag (draw) the pen to (86) to separate (pen up) the pen from the screen, and its icon is enlarged and displayed as a window (e.g., a letterpress) 84L.

[Technical task to solve the invention]

In the above-mentioned prior art, when the pen-up position is shifted in the horizontal direction (left and right directions) of the screen 8, as shown in FIG. 23, the enlarged icon, that is, the window 84L, is partially missing. Is displayed. This is because, as shown in FIG. 24, the pen tip is programmed as if the pen tip is moving while grasping the center 84C of the upper portion of the window 84L. In addition, even when the pen-up position is shifted in the vertical direction (up-down direction) of the screen 8, as shown in FIG. 25, the window 84L is displayed in the state missing partly.

It is a first object of the present invention to provide a window display device in which the effective display area of the window is not protruded and displayed on the screen.

It is a second object of the present invention to provide a window display device that enables the display of a window to protrude within a range without problems.

[Means for solving the problem]

A window display device according to the present invention has a visible area, a display for displaying a window image at a selected position, and coordinate data input for selecting a position specified by an instruction to the window display area to display the window image on the display. A device, a memory for storing a window image, a controller for supplying a window image from the memory to the display, a selected position of a window image protruding from the visible area, and automatically correcting the window image. And correction means for correcting the position of the window image so as to be displayed in its entirety.

The window display device described in the present invention comprises a coordinate data input device for instructing a window display area to display a window image on a display, a memory for storing the window image, and supplying a window image from the memory to the display. A controller for adjusting the display position of the window image protruding from the visible region of the display, and detecting means for detecting the protrusion of the window image, wherein the window image is visible in response to the detection. And correcting the position of the window image so as to be displayed within the window.

[Action]

In the window display device of the present invention, if the window is displayed at the position designated by the coordinate input device, when the window pops up from the screen, the display position of the window is corrected so that at least the effective display area of the window is accommodated in the screen, so that the window The effective display area of is not protruded (projected) from the screen and displayed.

In addition, in the window display device of the present invention, when the position specified by the coordinate input device is outside the allowable range in which it protrudes, the display position is corrected or not corrected depending on the condition. Therefore, it can classify according to a situation.

1 is a perspective view showing the configuration of one embodiment in the case where the window display device of the present invention is applied to an electronic notebook device (portable computer). The main body 1 is provided with a power switch 2, which is turned on when the device is in use and turned off when the use is stopped. In the vicinity of the left side of the power switch 2, a brightness adjustment switch 3 for adjusting the brightness of the screen 8 (the brightness of the LCD 22 described later) is provided. Moreover, the case 4 is provided in the side part of the main body 1. As shown in FIG. The case 4 has a switch 7 at its tip, and a pen 6 connected to the main body 1 via a cord 5 is housed when not in use. This pen 6 can be provided in the groove 10 formed horizontally in the upper direction part of the main body 1 in the state pulled out from the case 4. The speaker 7 is provided in the left part of this groove | channel 10, and predetermined sound is output.

Two switches 11 and 12 are provided on the upper right side of the main body 1. The switch 11 is a switching switch for switching the brightness of the backlight to be described later in two stages, for example, the switch 12 switches the volume of the sound output from the speaker 9 in three stages, for example. It is a changeover switch. The switch 13 provided on the left side of the main body 1 is a stop switch that is operated when the predetermined operation is stopped in the middle (for example, when the sound during soundproofing is stopped). On the left side of the main body 1, a socket 14 to which a memory (IC) card 70 (see Fig. 5) is mounted is also provided. The socket 15 is provided in the rear side of the main body 1. Moreover, the inside of the battery mounting part 1a which mounts the battery 19 of the rear part of the main body 1 is carried out.

In addition, the socket 16 is provided. These sockets 15 and 16 are connected to, for example, an RS232C cable, a modem, and other adapters. Moreover, the connection terminal 18 of the AC adapter 17 is provided in the upper left direction of the main body 1.

2 shows a more detailed configuration example of the screen 8. In this embodiment, the tablet 21 (tablet 21a which detects the position in the X-axis direction, and tablet 21b which detects the position in the Y-axis direction) is provided on the top. The LCD 22 is provided in the downward direction of the tablet 21. This LCD 22 is comprised by the glass plates 22a and 22b provided up and down, and the liquid crystal 23 inserted in the middle. In the downward direction of the LCD 22, a fluorescent plate (EL) 26 is provided. When the fluorescent plate 26 as this backlight generates light, the light illuminates the LCD 22. Since the tablets 21a and 21b are formed of a transparent member, the image displayed on the liquid crystal 23 is observed from the upper direction in the figure. A component (not shown) is loaded in the printed circuit board (PCB) 25 and electrically connected to the LCD 22 via a rubber connector 24. The tablet 21 is also provided by the conductive film 27. It is also electrically connected transiently.

3 shows a more detailed configuration example of the fluorescent plate 26. In this embodiment, an insulating film 33 is provided between the electrode 31 and the light emitting portion (the other electrode) 32. The light emitting unit 32 emits light by applying a predetermined voltage between the electrode 31 and the light emitting unit 32. The electrode 31 and the light emitting part 32 are formed in plate shape, and can irradiate the screen 8 uniformly.

As the backlight, a fluorescent tube can also be used. In addition, a fluorescent tube may be provided on the side of the main body as a side light, and the light may be transmitted to the rear of the LCD 22 by a light transmitting member so that the light can be illuminated.

4 is a block diagram showing the principle of position detection by tablet and display by LCD. The tablet 21 has 512 electrodes in the X-axis direction, for example, and has 342 electrodes in the Y-axis direction. As a result, 512 x 342 pixels can be detected. The tablet controller 46 controls the clock generation circuit 45a to sequentially add predetermined voltages to one of the 342 electrodes. Next, the clock generation circuit 45b is controlled so that voltage is sequentially applied to the 512 electrodes. That is, the tablet 21 is scanned by the clock which the clock generation circuit 45a and the clock generation circuit 45b generate | occur | produce. When the pen 6 is close to a predetermined position on the tablet 21, a predetermined capacitance is formed between the tablet 21 and the pen 6. Thus, when the pen 6 is pressed against the tablet 21, the switch 7 at the tip of the pen 6 is turned on, so that the pen 6 is between the pen 6 and the predetermined electrode on the tablet 21. The generated charge is detected and supplied to the tablet controller 46 via the amplifier 47. Since the tablet controller 46 manages the clock generation timing of the clock generation circuits 45a and 45b, the pen 6 on the tablet 21 at the timing of the detection signal supplied from the pen 6 and the clock is generated. Can be detected by the pressing position. The tablet controller 46 supplies the operation coordinates by the pen 6 detected in this way to the CPU 41. In the CPU 41, the pen 6 presses the tablet 21, the switch 7 is turned on (pen down), and is separated from the tablet 21, and the switch n is turned off. You are always monitoring your (pen-up) position. Therefore, the input is accepted at the pen down, and the input is confirmed at the pen up.

On the other hand, the CPU 41 controls the LCD controller 43 to write data corresponding to the image to be displayed in the memory (V-RAM) 44. The LCD controller 43 reads data from the memory 44 and supplies a signal corresponding to the data to the drive circuit 42b.

The LCD 22 has 512 electrodes in the horizontal direction and 342 electrodes in the vertical direction corresponding to the tablet 21. The drive circuit 42a sequentially adds predetermined voltages to the 342 electrodes one by one. In addition, the driving circuit 42b sequentially adds voltages corresponding to the image data to the 512 electrodes. In this way, each pixel on the LCD 32 is scanned so that a predetermined image is displayed on the LCD 22.

5 shows a more detailed electrical configuration of the body 1. The CPU 41 is connected to various ICs and the like via the bus line 57. In addition to the system program of the apparatus as a whole, the ROM 51 is, for example, a Kana Kanji conversion program for word processor functions and a dictionary table therefor, again a recognition program for handwriting input and a dictionary table therefor, and the following FIGS. A program for displaying a window described with reference to FIG. 7 is written. In the working RAM 52, data necessary for operation is stored at any time. A backup battery 54 (a battery separate from the battery 19) is connected to the backup RAM 53, so that necessary data can be backed up even when the power supply of the apparatus main body is turned off. The timer IC 55 is connected to the battery 54, counts clicks from the crystal oscillator 56, and outputs data of year, month, day, and time at that time. The LCD controller 43 and the tablet controller 46 described above are also connected to the CPU 41 via the bus line 57.

The audio processing circuit 58 generates a predetermined audio signal in response to an input from the sockets 14 to 16 or a command from the CPU 41, and outputs it to the adder 59. The voice memory 61 is controlled by the CPU 41, and outputs a predetermined voice (e.g., a warning sound "Et?") Stored in advance to the adder 59. The adder 59 adds the output of the voice processing circuit 58 and the output of the voice memory 61 and outputs it to the speaker 9 via the voice volume controller 60. The volume controller 60 is connected to the volume controller 60, so that the volume can be controlled by operating it.

In the fluorescent plate (backlight) 26, electric power from the power supply circuit 64 (power supplied from the battery 19 or the AC adapter 17 when the power switch 2 is turned on) is supplied to the inverter circuit 63. It is supplied through). The brightness of the fluorescent plate 26 can be switched to two stages (for example, brightness suitable for a bright room and brightness suitable for a dark room) via the inverter circuit 63 by switching the switching switch 11. In addition to this, by controlling the brightness adjustment switch 3, the brightness of the LCD 22 can be controlled to a desired value in multiple stages. The switch 65a is turned on / off in response to whether the battery 19 mounted on the main body 1 is a primary battery or a secondary battery. The switch 65b detects the capacity of the battery 19 and turns on / off in accordance with the magnitude of the capacity. These switches 65a and 65b and the like are connected to the key interface 62 via the power supply circuit 64. The key interface 62 further includes a brightness adjustment switch 3, a switching switch 11, and a stop switch ( 13) and the like are connected. The key interface 62 supplies a signal to the CPU 41 corresponding to the on / off of these switches.

The IC card 70 is connected to the socket 14, and the CPU 41 passes through the IC card interface 66, and the IC card 70 and data. It is possible to receive programs. The adapters 71 are connected to the sockets 15 and 16 so as to be connected to the CPU 41 via the expansion interface 68.

6 to 8 show the operation of the embodiment of the window display device of the electronic organizer device configured as described above. In the initial state of the electronic organizer, as shown in FIG. 9, various icons 84 are displayed in the icon area (standby area) 82 of the screen 8. The CPU 41 first determines whether or not the icon 84 is located in the icon area 82 (step S0). When the icon 84 is located in the icon area 85, the icon 84 is placed in the pen. It is determined whether the drawing is to be made out of the icon area 82 in the down state (step S1). If the icon 84 is not drawn out, another process is performed (step S2). If the icon 84 is drawing out, the CPU 41 checks the coordinates of the pen tip (step S3). Thus, the CPU 41 adds an arrow 84A to the pen-down icon 84 (the icon of the type in the example of FIG. 10) as shown in FIG. 10, and moves the pen down with the pen down. The user is instructed to hack into the input display area (data writing area) 86 in the direction.

Next, the CPU 41 checks whether the pen tip is out of the icon area 82 (step S4), and if not, checks whether the icon is enlarged and displayed as a window (step S5). If it is not enlarged, the CPU 41 returns to the processing of step S1. If the enlarged display (that is, displayed as a window), the CPU 41 stops the enlarged display and returns to the icon state (step S6). This is the process when the icon 84 is once drawn out of the icon area 82 and then returned to the icon area 82 again.

If it is determined in step S4 that the pen tip has exited the icon area 82, the CPU 41 checks whether the icon 84 is enlarged (ie, displayed as a window) (step S7). If not enlarged, the CPU 41 enlarges the icon and displays it as a window, and stops the icon state of the window (step S8). The CPU 41 proceeds to step S9 after detecting the enlarged display of the icon in step S7 or after the processing of step S8, and the current pen tip coordinate is the enlarged display icon, that is, the horizontal distance Wn of the window. The window is moved to be half of (step S9). This fact means that the center of the window (point 84C described later (FIG. 11)) becomes the working point H, and the entire window acts as the pen moves. At this time, drawing may be omitted if the enlarged display icon, that is, the position of the window has not changed previously.

FIG. 11 shows a state in which the icon 84 of "letter type" is drawn from the icon area 82 to the input display area 86 as it is pen-down, enlarged, and displayed as the window 84L of "letter type". . At this time, the CPU 41 displays only the outline of the window 84L. This is because, if the window 84L is moved while displaying the internal image of the window 84L, data processing takes time and high-speed movement is impossible. The CPU 41 also displays the window 84L using the center point 84C of the upper side of the window 84L of the "letterpress" as the pen-down position.

After the process of step S9, next, the CPU 41 checks whether the pen is up (step S10). If it is not up, the CPU 41 returns to the processing of step S3. If the pen is up, the CPU 41 proceeds to step S14 and stores the pen coordinates g and d that have been up in the working RAM 52.

As shown in FIG. 16, the width of the enlarged displayed icon, that is, the window 84L is Wn, and the width of the screen 8 is S, as shown in FIG. As described above, since the operating point H of the window 84L is the center point 84C of the upper side, it is located at the position (1/2) Wn at the left end of the window 84L. Pen coordinates g and d raised in the above-described window 84L are coordinates of the center point 84C of the window 84L. The coordinate origin (0, 0) is the upper left end of the screen 8. Therefore, as shown in FIG. 17, the horizontal distance from the left end of the screen 8 to the operating point H (center point 84C) of the window 84L is g, and the window ( 84L), the vertical distance to the working point H is d.

Next, the CPU 41

It is checked whether or not this is true (step S15). If this is true, the CPU 41 displays the window 84L such that the operating point H is located at the coordinate ((1/2) Wn-α-d) (step S16), and then inside the outline of the window 84L. Necessary contents (images) are displayed (step S20).

In the typical case where the above formula (1) holds, as shown in FIGS. 11 and 18, the window 84L protrudes to the left of the screen 8. In this case, the process of step S16 described above is performed, so that the window 84L is displayed so that at least the effective display area of the window 84L is accommodated in the screen 8, as shown in FIG. In addition, since the above-described processing of step 520 is performed, a necessary image is displayed inside the outline of the window 84L of the "letterpress" as shown in FIG.

If the formula (1) does not hold (NO in step S15) and the CPU 41,

Is checked (step S17). If this is true, the CPU 41 displays the window 84L such that the operating point H is located at the coordinate S- (1/2) Wn + α, d (step S18), and then the contour of the window 84L The content (image) necessary inside is displayed (step 20).

A typical example in which equation (2) holds is the case where the window 84L protrudes to the right side of the screen 8, as shown in FIG. In this case, since the process of step S18 mentioned above is performed, the window 84L is displayed so that the at least effective display area of the window 84L may be accommodated in the screen 8.

Thus, for example, when the device is used for the first time, even if a user unfamiliar with the operation shifts the position where the icon is drawn out from the icon area 82 to the left or right more than necessary, the letterpress is almost accurately displayed in the center. Therefore, the user is less likely to mistake the device for malfunction.

When the equations (1) and (2) do not hold (when the effective display area does not protrude from the screen 8), the CPU 41 indicates that the operating point H is the coordinate (g, d) (this is the pen-up coordinate). The window 84L is displayed (step S19). That is, in this case, the CPU 41 does not correct the display position of the window 84L.

On the other hand, when it is determined in step S0 that the icon is located outside the icon area 82, the flow advances to step S31 to determine whether the window is displayed on the screen 8 (input display area 86). It is determined. If the window is not displayed on the screen 8, processing proceeds to xpq (S32) and other processing is executed. When the window is displayed, the flow advances to step S33 to determine whether or not the pen is down. If the pen is not down, the process returns to step S31. When it is pen-down, it progresses to step S34 and pen point coordinates are investigated. If the pen tip coordinate is located outside the window, when it is determined in step S35, the flow advances to step S36, and other processing is executed.

When the pen-down position is a predetermined position in the window (each part 88 (Fig. 13) on the outer black outline or on the upper right side in which the letter of the letter is displayed), is it proceeded to step S37 and is pen-up? If it is determined that the pen is not up, the flow advances to step S38 to check the pen tip coordinates. If the pen tip coordinate is outside the icon area 82, the flow advances to step S40, and a window is displayed to correspond to the position on the window of the current pen tip coordinate. If the position has not moved, drawing may be omitted. After step S40, the flow returns to step S37. That is, by the loop of steps S37 to S40, the window (its outline) is freely moved in correspondence with the moving position of the pen 6.

When it is determined in step S39 that the pen tip has entered the inside of the icon area 82, the flow advances to step S41 to stop the display of the window and change the display to the icon. In other words, since the pen tip has entered the icon area 82, the window is accommodated in the icon area 82. After step S41, the flow returns to step S37.

Thus, when it is determined in step S37 that the pen is up, the flow advances to step S42 to display an icon or a window. The flow advances to step S42 to display an icon or a window. Thereafter, the flow returns to step S0.

In this way, immediately after the icon is taken out from the icon area 82, the display position of the window is corrected at a position from the center. However, once the icon is taken out, the position correction is not performed but is displayed at the position designated by the pen.

By setting α to an appropriate positive value, as shown in FIG. 20, part of the window 84L protrudes from the screen 8, but the effective display area of the window 84L is accommodated in the screen 8. Can be displayed. If α is set to zero, the window 84L is displayed without protruding from the screen 8. If α is set to a negative value, the window 84L can be displayed at the center of the screen 8.

The above β is an offset indicating a reverse value for performing window display position correction. If β is set to a positive value, as shown in FIG. 21 (a), immediately after the icon is taken out of the icon area 82, the display position of the window 84L designated by the user pops out. When the value is β or more, the display position of the window 84L is corrected so that the window 84L does not protrude from the screen 8 (exactly, it protrudes by α). In this case, β serves as an offset that indicates the allowable range of the window to pop out. If β is set to zero, the window display position specified by the user is corrected when the left end or the right end of the window 84 exceeds the left end or the right end of the screen 8, respectively. If α and β are set equally, correction is performed when the effective display area is exceeded.

When β is set to a negative appropriate value, as shown in FIG. 21 (b), even if the deviation of the window display position specified by the user is small and does not protrude from the screen 8, Only the effective display area remains on the screen 8.

On the other hand, when the icon is not drawn out from the icon area 82 for the first time and is about to be moved to the predetermined position, the already drawn out is beta (α degrees). Thus, for example, as shown in FIG. 13, the pen is drawn down to the area 88 in which the characters of the "letter type" of the window 84L of the "letter type" are already drawn out and displayed. Even if the pen is moved left and right as it is (88M in Fig. 13 indicates the pen movement position), even if the window display position is specified at the position displayed on the outline 84LM by pen-up at that position, the "print type" It is judged that the window 84L is intentionally manipulated to protrude from the screen 8 (for example, because the input display screen is widened), and as shown in FIG. The window is displayed at the position of the outline 84LM specified by the pen-up position.

In the above embodiment, the icon is drawn out from the icon area and enlarged to display a window, but the present invention is not limited to this, but is applied to various window displays. For example, when the icon 88 of the "tool" shown in FIGS. 9 to 14 is taken out, as shown in FIG. 15, the window 88L in which the icon of the "tool" is enlarged is opened. Is displayed. Since various icons are also displayed in this window, this window area also becomes a kind of icon area. Therefore, for example, an arrow 90A is displayed when the pen is down in the icon 90 of "conversion" in this window. Therefore, the window (not shown) for the "conversion" process drawn out from the window 88L and enlarged can also perform display position correction by the processes shown in FIGS. 6 to 8.

In the above embodiment, when the window is moved, only the outline is displayed first, but the necessary image in the outline may be displayed at the same time.

In addition, although the pen is used as a means for designating the position of the window in the above embodiment, other coordinate input devices such as a mouse can be used.

Further, the above embodiment relates to display correction of the windows in the left and right directions, but similarly, display correction of the windows in the up and down directions can be performed.

In the above embodiment, the display position correcting means of the window is configured by the CPU and the program, but also by dedicated hardware.

[effect]

According to the window display device described in the present invention, since the window display position is corrected so that at least the effective display area of the window is accommodated in the screen, the effective display area of the window does not protrude from the screen.

According to the window display device described in the present invention, when the designated display position is out of the allowable range, the display position is corrected according to the condition and not corrected according to the condition, so that the operation reflecting the intention of the operator becomes possible. The operability is improved, and natural operation that fits the operator's sense of operation is enabled.

Claims (2)

A window display device in which a display position of a window on the screen is designated by the coordinate input indicator 6, which means (S0) determines that an icon is already open and is in a window state, and the icon is not already open. Means (S10, S14) for detecting coordinate positions at which the coordinate indicator 6 displays the icon as the window, and based on the preset size of the window, Means (S15-S18) for calculating a position not protruding from the effective display area, and means (S19) for displaying the window according to the calculation result, and further, by the determining means (S0). If it is determined that the icon is already open as a window, the coordinate indicator 6 detects the coordinate position displayed by moving the window to display (S34, S35, S37, S). 38, S39, and means (S40, S42) for displaying the window corresponding to the moving place. A window display method in which the display position of a window on the screen is designated by the coordinate input indicator (6), comprising the steps of determining (S0) that an icon has already been opened and is in a window state, and the icon is not already open. In the case, the coordinate indicator 6 detects the coordinate position at which the icon is displayed as the window (S10, S14), and the window is displayed on the display 22 based on a preset size of the window. (S15-S18) and calculating (S19) the window according to the result of the calculation, and calculating the non-displayed position in the effective display area of the. When it is determined that the icon is already opened as a window by the step, the coordinate indicator 6 detects coordinate positions displayed by moving the window (S34, S3). 5, S37, S38, and S39, and displaying the window in correspondence with the moving place (S40, S42).